Solve the Problem $c ( n ) = \frac { 1 } { 2 } \left( n ^ { 2 } - n \right)$

question 38

Multiple Choice

Solve the problem.
-The number of different committees of 2 students where the 2 students are selected from a group of n students is given by $c ( n ) = \frac { 1 } { 2 } \left( n ^ { 2 } - n \right)$ n) . How many different committees of 2 students can be selected from a group of 10
Students?

• A)10
• B)20
• C)45
• D)1

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Definitions:

Major Motor

Pertaining to the primary physical skills involving large muscle movements such as walking, running, jumping, and throwing.

Infancy

A period in human growth that spans from birth to 24 months, characterized by rapid physical development and cognitive skills acquisition.

Grasp Rattle

describes an early developmental milestone where a baby learns to hold and shake a toy that makes noise.

Neonatal Period

The initial four weeks of a newborn's life, a critical period for adaptation outside the mother's womb.